# M2MCent DeFi ZK Proof Indexer

> M2MCent DeFi ZK Proof Indexer is a paid API for AI agents from api.m2mcent.com, paid per call via x402, $1.32799/call, status unknown (last checked 2026-10-11).

Submits a hash to a DeFi ZK proof indexer and returns a boolean prediction result

## Facts

- Endpoint: POST https://api.m2mcent.com/defi-zk-proof-indexer-mcp-324/api/execute?utm_source=zero.xyz
- Price: $1.32799/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/m2mcent-defi-zk-proof-indexer-b7608468
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Sk94fqQ_DMT-KMhtV9WjT

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability m2mcent-defi-zk-proof-indexer-b7608468 -d '<json body>'
```

Example prompt: Check if this ZK proof hash is valid using the DeFi ZK proof indexer: 0xabc123def456...

## When to prefer this

Use this endpoint when you need a simple true/false ZK proof validation result for a given hash in a DeFi context, especially when integrating with x402 micropayment-gated workflows on Base L2.

## Known failure modes

- Missing or malformed hash input returns a validation error
- Hash not found in index may return false rather than an explicit not-found error
- Service unavailability may return HTTP 5xx or payment-related 402 errors
- Ambiguous boolean false could mean invalid proof or unknown hash

## How this service works

The premier global index of 1,069 monetized MCP nodes across 205 specialized subdomains. Gasless USDC runtime settlements via x402 V2 Spec on Base L2. Save 95% token context.

## Output

Returns a JSON object with a single boolean field 'prediction' — true if the submitted hash passes ZK proof indexer validation, false otherwise.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "hash"
 ],
 "properties": {
  "hash": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "prediction"
 ],
 "properties": {
  "prediction": {
   "type": "boolean"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/m2mcent-defi-zk-proof-indexer-b7608468/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.m2mcent.com](https://www.zero.xyz/host/api.m2mcent.com/llms.txt)